精品蜜桃视频在线,成人色综合中文字幕,九色91popny国产,91精品国产综合久久不8,91精品久久久久久久久久精,青青青国产视频亚洲,一本**综合亚洲鲁鲁五月天,变态av另类天堂,人妻女教师披轮流侵犯

  In the continuous rolling process, the pusher continuously pushes the billet into the heating furnace to keep the billet in the heating state. For example, the heating furnace in our plant is 9.128 m wide and 30.856 m long. The pusher is allowed to push the billet 9 m long, 1.1 m wide and 0.2 m thick. The maximum stroke of the pusher is 4.3 m, the pushing speed is 0.1 M / s, and the return speed is 0.23 M / s. The two pushers have left and right single action and linkage working modes. The pusher will push the billet together Push the steel into the furnace one by one, so that at most 30 pieces of steel in the furnace can be heated at the same time. Therefore, when the two push rods are linked to push the steel into the furnace, it is necessary to keep the two push rods synchronous, and the synchronous error is within ± 12 mm, so as to ensure that the billet enters the furnace horizontally, or there is a billet inclined. After the accumulated inclination, the whole furnace steel will tilt or even turn over, and the whole rolling line will be shut down due to furnace scraping.